JPS56126736A - Vibrating device - Google Patents

Vibrating device

Info

Publication number
JPS56126736A
JPS56126736A JP3117880A JP3117880A JPS56126736A JP S56126736 A JPS56126736 A JP S56126736A JP 3117880 A JP3117880 A JP 3117880A JP 3117880 A JP3117880 A JP 3117880A JP S56126736 A JPS56126736 A JP S56126736A
Authority
JP
Japan
Prior art keywords
coil
vibration
switch
contactor
frequency vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3117880A
Other languages
Japanese (ja)
Inventor
Kiyoshi Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inoue Japax Research Inc
Original Assignee
Inoue Japax Research Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inoue Japax Research Inc filed Critical Inoue Japax Research Inc
Priority to JP3117880A priority Critical patent/JPS56126736A/en
Publication of JPS56126736A publication Critical patent/JPS56126736A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To enable detection with high precision by a method wherein a dual frequency vibration pulse generated by causing high-frequency vibration intermittently is impressed on the coil of a vibration contactor. CONSTITUTION:The coil 3 is wound round a rod-shaped electrostrictive vibrator 2 of AlFe or Ni connected to the contactor 1. A charging switch 6 and a two-directional switch 8, such as a thyristor, provided in a resonant circuit composed of a three-phase AC power source 5, an oscillating capacitor 7 and the coil 3 are made conductive alternately by a pulser 9. When the switch 6 is turned on, the capacitor is charged and then, when the switch 8 is turned on, only the positive pulse of vibration current flows to the coil 3 through the intermediary of a rectifying body 10. By repeated turning-on and turning-off of the switches 6 and 8, the pulse of dual high-frequency vibration is impressed on the coil 3 and the state of vibration of the contactor 1 is changed by approach of an object and detected by a pickup 4. By this method, detection with high precision can be performed.
JP3117880A 1980-03-11 1980-03-11 Vibrating device Pending JPS56126736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3117880A JPS56126736A (en) 1980-03-11 1980-03-11 Vibrating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3117880A JPS56126736A (en) 1980-03-11 1980-03-11 Vibrating device

Publications (1)

Publication Number Publication Date
JPS56126736A true JPS56126736A (en) 1981-10-05

Family

ID=12324184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3117880A Pending JPS56126736A (en) 1980-03-11 1980-03-11 Vibrating device

Country Status (1)

Country Link
JP (1) JPS56126736A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153440A (en) * 1983-02-18 1984-09-01 Hitachi Ltd Armature coil winding device for flat motor
JPS6176952A (en) * 1984-09-22 1986-04-19 Syst Maintenance:Kk Method and device for flaw detection of nonmetallic material by infrasonic wave

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153440A (en) * 1983-02-18 1984-09-01 Hitachi Ltd Armature coil winding device for flat motor
JPS6176952A (en) * 1984-09-22 1986-04-19 Syst Maintenance:Kk Method and device for flaw detection of nonmetallic material by infrasonic wave

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